{"id":6368,"date":"2026-07-01T09:27:24","date_gmt":"2026-07-01T01:27:24","guid":{"rendered":"https:\/\/www.slewbearingtec.com\/?p=6368"},"modified":"2026-07-30T16:52:19","modified_gmt":"2026-07-30T08:52:19","slug":"what-is-a-ring-bearing-slew-bearing-types-explained","status":"publish","type":"post","link":"https:\/\/www.slewbearingtec.com\/fr\/what-is-a-ring-bearing-slew-bearing-types-explained.html","title":{"rendered":"What Is A Ring Bearing? Slew Bearing Types Explained"},"content":{"rendered":"
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In the industrial field, we are more accustomed to the “ring bearing” known as the slewing bearing. As the 1 large rotary joint, its core task is to deal with axial force, radial force and overturning moment at the same time. If you look at the heavy equipment, you will know that the slewing ring is their “skeletal hub”, which connects the fixed base and the rotating part steadily.<\/p>\n\n\n\n

Many mechanical students and junior designers often have a misunderstanding that selection is to take the weight of the equipment to the rated load on the hard set manufacturer’s sample. As everyone knows, it is this taken for granted that more than 60% of the rotating system is scrapped in advance. To put it bluntly, whether the slewing bearing is reliable depends to a large extent on the rigidity of the installation structure, the meshing state of the gears, and the extremely strict installation tolerance.<\/p>\n\n\n\n

Today, we will come to the technical principle and core classification of 1 slewing bearings, and give you a set of guidelines for project selection and pit avoidance.<\/p>\n\n\n\n

\"A<\/figure>\n\n\n\n

<\/span>Slewing Bearing Selection Guide: The L.E.A.D. Rule<\/span><\/h2>\n\n\n\n

Choosing the right swivel requires a systematic methodology. Field engineers often use the L.E.A.D. rule as a way to eliminate blind guesswork while avoiding the waste of overdesign.<\/p>\n\n\n\n

<\/span>L-Load curve (Load Profile)<\/span><\/h3>\n\n\n\n

Don’t just look at static loads, dynamic loads have to be counted together. It is almost impossible for the slewing bearing to bear only the axial weight. Imagine the scene when a crane lifts a heavy object, which creates a huge overturning moment. You have to combine the thrust, radial load and overturning moment together for accurate calculations.<\/p>\n\n\n\n

<\/span>E-Working Environment (Environment)<\/span><\/h3>\n\n\n\n

Where the equipment landed, environmental problems must be confirmed at the first time. The bearings of offshore wind turbines blow corrosive salt spray every day, so they must be coated with thermal spray zinc coating and heavy nitrile rubber sealing rings. However, mining excavators eat soil every day and have to be equipped with special labyrinth seals as standard.<\/p>\n\n\n\n

<\/span>A- Connection structure (Attachment Structure)<\/span><\/h3>\n\n\n\n

Remember one thing: how hard the bearing is depends entirely on the base of what structure it is screwed on. If a highly rigid slewing bearing is bolted to a thin and soft steel plate, it will definitely deform after being stressed, which is called “potato chip effect” in the industry “. The support structure must have sufficient thickness and flatness, otherwise the raceway will definitely twist.<\/p>\n\n\n\n

<\/span>D-Drive mode (Drive Mechanism)<\/span><\/h3>\n\n\n\n

What does the equipment rely on to turn it? There are usually three drive configurations for slewing bearings: internal gears, external gears, or simply no gears.<\/p>\n\n\n\n